#! /bin/sh
# Test "nice".

# Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

# This script takes no arguments.

if test -n "$DJDIR"; then
  echo "$0: cannot test nice on DJGPP" >&2
  exit 77
fi

tests='
0 empty 10
1 -1 1
2 -12 12
3 -1:-2 2
4 -n:1 1
5 -n:1:-2 2
6 -n:1:-+12 12
7 -2:-n:1 1
8 -2:-n:12 12
9 -+1 1
10 -+12 12
11 -+1:-+12 12
12 -n:+1 1
13 --1:-2 2
14 --1:-2:-13 13
15 --1:-n:2 2
16 --1:-n:2:-3 3
17 --1:-n:2:-13 13
18 -n:-1:-12 12
19 --1:-12 12
NA LAST NA
'
set $tests

if test "$VERBOSE" = yes; then
  nice --version
  set -x
fi

# Require that this test be run at `nice' level 0.
niceness=`nice`
if test "$niceness" = 0; then
    : ok
else
  echo "$0: this test must be run at nice level 0" 1>&2
  exit 77
fi

fail=0
while :; do
  test_name=$1
  args=$2
  expected_result=$3
  test $args = empty && args=''
  test x$args = xLAST && break
  args=`echo x$args|tr : ' '|sed 's/^x//'`
  if test "$VERBOSE" = yes; then
    #echo "testing \`nice $args nice\` = $expected_result ..."
    echo "test $test_name... " | tr -d '\n'
  fi
  test x`nice $args nice 2> /dev/null` = x$expected_result \
    && ok=ok || ok=FAIL fail=1
  test "$VERBOSE" = yes && echo $ok
  test x`nice $args nice 2> /dev/null` = x$expected_result || fail=1
  shift; shift; shift
done

exit $fail
